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Family Cimbicidae - Cimbicid Sawflies

unknown - Cimbex americana Caterpillar to ID if possible - Abia Caterpillar - Cimbex americana Unknown insect - Cimbex Sawfly - Abia americana Large wasp on shore pine what kind of bee it his? - Cimbex americana Elm Sawfly larva - Cimbex americana
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Sawflies, Horntails, and Wood Wasps)
Family Cimbicidae (Cimbicid Sawflies)
Numbers
Nearctica.com lists 3 genera: Cimbex Olivier 1790 (4 spp.), Trichiosoma Leach 1817 (4 spp.), Zaraea Leach 1817 (4 spp.)
Arnett (1) and Insects of Cedar Creek lists 12 species.
Size
15-25 mm
Identification
Adults robust, resemble bumble bees. Base of abdomen broadly joined to thorax (no wasp waist). Antennae have seven or fewer segments, slightly clubbed.

Larvae eruciform (caterpillar-shaped, i.e., cylindrical, with well-devloped head and legs).
Life Cycle
Larvae typically feed on foliage of trees and shrubs. Hosts include: Cimbex--Elm (Ulmus), Zaraea--Honeysuckle (Lonicera), Trichiosoma--Cherry (Prunus).
Print References
Arnett, p. 542 (1)
Internet References
Univ. Florida--ENY 3005
North Carolina State University Entomology Collection lists Cimbex americana (6 pinned) and Trichiosoma triangulum (1 pinned).